Home / 1,181.60-1,772.17-1,123.06

Finding the Fourth Proportional to 1,181.60, 1,772.17 and 1,123.06

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Solution

The fourth proportional to 1,181.60, 1,772.17 and 1,123.06 is: 1,684.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.60 : 1,772.17 = 1,123.06 : x
  2. Step 2: Convert to fraction form
    1,181.60/1,772.17 = 1,123.06/x
  3. Step 3: Cross multiply
    1,181.60x = 1,772.17 × 1,123.06
  4. Step 4: Simplify right side
    1,181.60x = 1,990,249.32
  5. Step 5: Solve for x
    x = 1,990,249.32/1,181.60
  6. Step 6: Final answer
    x = 1,684.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.